Outstanding piece of software. Easy to use and outstanding interface integration with Word, Firefox and Google Chrome. Many different styles including MHRA. Great drag and drop facility from address bar. And free. Absolutely brilliant reference software.
Great reference management tool. Sits in your browser till you need it. References can be tagged, organised by topic and shared with others. Cite while you write features work reliably too. There are a number of communities for sharing resources and discussions. Finally, your library can be imported to Mendeley if you really need to.